Base station device and mobile station device in mobile communication system utilizing the site diversity effect in soft handover state
First Claim
1. A base station in a mobile communication system, comprising:
- means for receiving mobile station transmission signals from one mobile station in the mobile communication system;
means for measuring a measurement value for at least one of a receiving level and an interference ratio level of the mobile station transmission signals;
means for producing a mobile station transmission power control data specifying a mobile station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with said one mobile station; and
means for transmitting base station transmission signals containing the mobile station transmission power control data to said one mobile station.
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Accused Products
Abstract
A base station and a mobile station in a mobile communication system capable of reducing interference among mobile stations and increasing a subscriber capacity of the system. The base station has a unit for measuring a measurement value for at least one of a receiving level and an interference ratio level of the mobile station transmission signals, and a unit for producing a mobile station transmission power control data specifying a mobile station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with the mobile station. The mobile station has a unit for measuring a measurement value for at least one of a receiving level and an interference ratio level of the base station transmission signals, and a unit for producing a base station transmission power control data specifying a base station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with the mobile station.
119 Citations
26 Claims
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1. A base station in a mobile communication system, comprising:
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means for receiving mobile station transmission signals from one mobile station in the mobile communication system; means for measuring a measurement value for at least one of a receiving level and an interference ratio level of the mobile station transmission signals; means for producing a mobile station transmission power control data specifying a mobile station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with said one mobile station; and means for transmitting base station transmission signals containing the mobile station transmission power control data to said one mobile station. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile station in a mobile communication system, comprising:
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means for receiving base station transmission signals from one base station in the mobile communication system; means for measuring a measurement value for at least one of a receiving level and an interference ratio level of the base station transmission signals; means for producing a base station transmission power control data specifying a base station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with said mobile station; and means for transmitting mobile station transmission signals containing the base station transmission power control data to said one base station. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A mobile station in a mobile communication system, comprising:
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means for receiving base station transmission signals from one base station in the mobile communication system and transmitting mobile station transmission signals to base stations in the mobile communication system; means for measuring a communication quality of the base station transmission signals; means for carrying out a radio channel switching from said one base station to another base station in the mobile communication system whenever the communication quality measured by the measuring means becomes lower than a threshold communication quality; and means for adjusting the threshold communication quality according to a number of base stations simultaneously in communication with said mobile station. - View Dependent Claims (14)
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15. A method for controlling a transmission power in a mobile communication system, comprising the steps of:
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measuring a measurement value for at least one of a receiving level and an interference ratio level of mobile station transmission signals from one mobile station received at one base station; producing a mobile station transmission power control data specifying a mobile station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with said one mobile station; transmitting base station transmission signals containing the mobile station transmission power control data from said one base station to said one mobile station; extracting the mobile station transmission power control data from the base station transmission signals transmitted by said one base station and received at said one mobile station; and adjusting the mobile station transmission power of the mobile station transmission signals from said one mobile station to said one base station according to the mobile station transmission power control data. - View Dependent Claims (16, 17, 18, 19)
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20. A method for controlling a transmission power in a mobile communication system, comprising the steps of:
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measuring a measurement value for at least one of a receiving level and an interference ratio level of base station transmission signals from one base station received at one mobile station; producing a base station transmission power control data specifying a base station transmission power required in adjusting the measurement value to a target level according to a number of base stations simultaneously in communication with said one mobile station; transmitting mobile station transmission signals containing the base station transmission power control data from said one mobile station to said one base station; extracting the base station transmission power control data from the mobile station transmission signals transmitted by said one mobile station and received at said one base station; and adjusting the base station transmission power of the base station transmission signals from said one base station to said one mobile station according to the base station transmission power control data. - View Dependent Claims (21, 22, 23, 24)
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25. A method for controlling a radio channel switching of a mobile station in a mobile communication system, comprising the steps of:
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measuring a communication quality of the base station transmission signals from one base station received at said mobile station; carrying out a radio channel switching from said one base station to another base station in the mobile communication system whenever the communication quality measured at the measuring step becomes lower than a threshold communication quality; and adjusting the threshold communication quality according to a number of base stations simultaneously in communication with said mobile station. - View Dependent Claims (26)
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Specification